What is the end product of the Calvin Cycle?

Correct option is D

Correct Answer: (D) PGAL

Explanation:
The Calvin Cycle is the stage of photosynthesis where plants use CO₂ to make sugar in the chloroplast stroma.

The main product formed at the end of the cycle is Glyceraldehyde-3-phosphate (PGAL or G3P).

PGAL is a 3-carbon sugar molecule.

This PGAL later helps the plant make glucose, sucrose, and starch.

Important fact:
For every 3 CO₂ molecules, the cycle produces 6 PGAL molecules:

1 PGAL leaves the cycle to form sugars.

5 PGAL are used to regenerate RuBP so the cycle can continue.

Why other options are incorrect:

A. PGA → First stable compound formed, not the final product.

B. ADP + NADP⁺ → These are by-products after ATP and NADPH are used.

C. RuBP → Starting CO₂ acceptor molecule that is regenerated.